The interview process was made of four stages. I took part in three of them.
Interview with HR went well, classic questions about experience, skills and expectations.
This phone interview was followed by another phone interview with the Manager of the team. It also went well, the interviewer was nice and I felt at ease. Questions were traditional, included my experience, skills and I had the opportunity to know more about the internal organisation.
A week after, on-site interview with three interviewers was arranged. It was not a panel interview; I spoke with every manager separately. At this stage, the questions were more specific and related to typical scenarios, such as communication with customers and hierarchy, understanding of the role and description of my current role. First and last interviewers were polite and, despite the fact it was clear from the beginning I was not the type of profile they were looking for, I felt at ease. The second interviewer was arrogant and dismissive. She presented herself as someone that does not have time to resolve other people's problems. Is it something to say during an interview? I did not feel I would have wanted to work with her anyway.
After the interview I did not receive any feedback for two weeks, despite I sent a polite email after one. Feedback was the shocking part of the process: HR copied and pasted a part of the sentence they received as from the managers (How do I know? Syntax was not correct and the first part of the sentence did not match the second one) and they informed me, with slightly nicer words but not so nice, that they did not think I was clever enough to work for Forrester. Funny enough, this information was delivered with an incorrect sentence!